TM 9-2320-302-100012 00-9Table 1. Preventive Maintenance Checks andServices (PMCS) for M915A3 - Continued.Item No.IntervalLocationProcedureNot Fully MissionCapable If:Item ToCheck/Service18DuringSteeringCheck for smooth steering withoutpulling to one side or excessiveplay [more than 2½ in. (6.4 cm)]in steering wheel.Steering is erratic,pulls, or has excessiveplay.19DuringPower TrainCheck for unusual noise or vibra-tion from engine, transmission,drive shafts, axles, and wheels.Unusual noise or vibra-tion is present.20DuringAir Condi-tioner NOTEPerform the following inspection only if air condi-tioner is required due to climatic conditions.Turn air conditioner on and setblower to maximum cooling speedsettings. Wait five minutes toallow temperature to stabilize.Check outlet ducts for cool air. Ifair is not cooler than ambient tem-perature, notify supervisor.21AfterOverall LeakageBe alert for evidence of fluid leak-age.Class III oil, coolant, orfuel leaks are evident.NOTEIf leakage is detected, further investigation is required to deter-mine location and cause of leak.FRONT AND LEFT SIDE22AfterOverall Viewa. Check under truck for evidenceof fluid leakage such as oil,coolant or fuel.a. Class III oil, coolantor fuel leaks are evi-dent.NOTEIf leakage is detected, further investigation is required to deter-mine location and cause of leak.b. Check front gladhands for dam-age. Ensure that gladhand ventholes are not plugged. Ensurethat dummy couplingsareinstalled.